there's one in seattle, portland, san jose has one. san jose is building another one now. san diego i mean is building another one it's been so successful. so i guess it's going to be the thing of the future again. >> reporter: for the first 40 or so years of this century the bay area had a wonderful rail system that linked the bay, east bay and san francisco down to the peninsula. it's gone now but truly not forgotten because the lesson has been learned and it is coming back. >>> and that's it for this week's second look. i'm frank somerville. we'll see you again next week.